Apropos of absolutely nothing, the BEST thing you can do for yourself as an RPG player, GM, or designer is to play, run, and read as many different games as possible across a variety of styles, genres, and systems. You'll learn SO much about what you do and don't like or want.

Think of RPGs like food for a second. Have you ever met someone who says "I don't like Brussels sprouts," but then they admit they've never had them? How do they know for sure, then? If they ate them once a long time ago and didn't like them, maybe they just weren't cooked well!

Popular TTRPGs are like chain restaurants; they're easy to get people to eat at because you know most of what's on the menu. But don't mistake popularity for quality; popular franchises also can have baggage! Ex: I'd rather support a Chinese-run Szechuan place than PF Chang's.

When you broaden your horizons about the kinds of games you play/run, you'll see how other games create different kinds of play experiences and can look at your old favorites with fresh eyes. You might realize you want something that your main game can't offer but a new RPG will!

There's a valid concern that learning new games is hard but I don't think it's nearly as inaccessible as it might seem! There are TONS of RPGs that cost under $20 and are 100 pages or less. The "world's most popular RPG" costs $50 to play, $150 to run, and is 500+ pages of rules.

"But I don't use all those rules when I play ___," you say. IMHO, if you're removing/changing rules to tell the kinds of stories you're interested in or to improve your experience, you might be playing the wrong game! You CAN find a game that DOES do those things out of the box.